After obtaining \(\left\lbrace \mathbf {q}_m^*\right\rbrace _{m\in \mathbb {M}}\) , we have to determine the location \(\mathbf {q}^*\)  from the result, which achieves a Pareto-optimum of (REF ) for every \(m\in \mathbb {M}\) . Under the prior knowledge of \(\left\lbrace \mathbf {q}_m^*\right\rbrace _{m\in \mathbb {M}}\) , we consider the following method of the global criterion that minimizes the sum of \(\ell _2\) -deviation and leads to the Pareto front [1]}:
\(\begin{aligned}& \underset{\mathbf {q}}{\texttt {min}}~\sum _{m\in \mathbb {M}} ||\mathbf {q}_m^*-\mathbf {q} ||_2 .\end{aligned} \) 
